Island



6 G. W. DOVER.

TOOL HOLDER.

APPLICATION man MAY 10. I920.

1,366,640. Patented Jan. 25,1921.

P VTo RE UNITED STA T ElS PATENT tr es:

GEORGE W. DOVER, OE CRANfaTON, RHODE ISLAND.

- roor-nonnnn.

Application filed May 10,

To aZZ whomit may concern Be it known that l, Gnonon i l DOVER, a citizen of the United States, residing at Cranston, in the county oi? lrovidence. and State 01" Rhode Island, have invented certain new and useful Improvements in Tool Holders, or which the following is a specification.

My invention relates to holders adapted to carry tools upon lat-hes, planers, and the like.

The primary objects of my invention are to afford the use of a plurality of tools of diiierent character in one structure; to render unnecessary a complete disassemblage oi the component parts for the substitution of tools; to facilitate a variety of operations of a single structure; to furnish an adjustmentior the tools toward and from the work in a. horizontal plane, to elevate and depress the tools in any desired degree from the horizontal plane,'and to change the angular positions of the tools; to strengthen the interengagement oi the parts; to make the detachment of individual tools unnecessary for grinding purposes; and to strengthen. and simplify the entire structure.

To these ends the" invention consists of a device possessing certain features of construction and relative arrangement oi parts hereinafter claimed, oneform of said device being illustrated in the drawings and now to be described in detail.

I will now proceed to describe my invention with reierenceftothe. accompanying drawings which form a part of thisspecification, wherein i Figure 1 is a plan view of my novel holder,

Fig. 2,"a section of the'same on line 22 of Fig. 1,

Fig. 3, a side elevation of'the: head,

Fig. 4, a section on line 4.-i of Fig; 1, and

Fig. 5, a side elevation of one end or the su porting arm.

ike reference characters indicate like parts throughout the views.

A holder 8 comprises a shank or bar 9 and a fiat circular extension or head 10 disposed at an angle to the shank and provided with a central conical or flaring hole 13 therethrough. The inclined wall 1 1 formed by I the opening is provided with vertical corrugations or serrations 15.

A substantially cylindrical hub or adjusting member 16 has a body 17 of reduced diameter near one end forming a rounded an- Specification of Letters Patent. Patented Ja11,25, 1921,

192a. Serial No. 380,395.

nular shoulder 18, whence the hub tapers rorming a truncated conical extension 19 provided on its facewith longitudinal corrugations or serrations 26 adapted to register with the serrations 15 in the supporting arm. The body of the hub is longitudinally bored forming a cylindrical recess 22. The bore is of less diameter throughthe conical extension 19 forming an opening or hole 2%. intermediate the recess and hole is a resultant inclined annular shoulder 26. The body 17 has diametrically opposite openings 23 in. its sides. Eilidably mounted in the hub is a block comprising a cylindrical body portion 30 in the recess of slightly less length than the recess, an annular shoulder 81, and a. stem 3:2 slidable in the bore 2i provided. at one end with a thr'ead33. [The member 30 has a diametrical hole 35 adapted to register with the openings 28 otlikediameter. A

flanged nut 36 or a nut. and washerengages the threaded portion of the stem 32 resting against the outer face of the portion 10 of the supporting arm.

Slidably mounted in the hole 35 inthe block, and with a running fit in this hole and in the openings 28, is a tubular rod 37 provided at its ends with internal screw threads 38 and 39. Adjacent one end of the rodare diametrically disposed rectangular openings 40adapted to slidably receive a bit or cutting tool 41. A set screw 42 engages the threads 39 and is ada ted to bear against and retain thebit l1. boring tool comprising a cutter 43, body 4.4, and threaded shank 45 may be mounted in the other end of the rod, the shank engaging the thread 138. The mold-3 is disposed at a. right angle to the bit 11; i

In operation a tightening oi' the nut 36 elevates the block 30 tightening the rod against the hub116 at the boundary of the openings 28, and simultaneously forcing the corrugations 2-0 of the conical extension into the corrugations 15 of the flaring opening 13. The firm engagement of the parts is intensified by locating the corrugations upon inclined faces. The tubular tool support 37 may be longitudinally adjusted or may be rotated to any desired angle by loosening the nut. By the same means the body 16 with the support 37 may be radially adjustcd. Both the block and the body are separable from the arm 8 by removing the nut.

Itwill be understood that the recess 22 maybe elongated to permiteven a greater extent of travel of the member '30. 'The longer the extent of travel of said member the smaller the passage 7 for the a holder c through the hole 35 and openings 28. Hence a holderrof very small diameter thickness,

or of various cross sectional contours, may.

be efliciently clamped.

Iclaimz- J 4 1. In a tool holder of the character described, a holding member provided with a hole, a rotatable adjusting member in the hole provided with lateral holes, a block upon which the adjusting member is mount 7 ed extending through the first hole, a tool support mounted in the 'bloclrextencling' through the lateral holes, and means on the extended portion of the block engaging the 1 holding member for simultaneously clamping the support against the adjusting member: and securing the adjusting member,

against the holding member 2. Ina tool holder of the character de scribed, a holding member provided with a hole, a rotatable adjusting member in the hole provided with lateral holes, a block slidably mounted in the adjusting member, a tool support in the block extending through the lateralfholes, and means "on the block engaging the holding memberfor simultaneously 'clamping' the support against the adjusting member and securing the adjusting member to the holding member. i I

3. In a tool holder of the character described, a holding member provided with a 7 hole, a rotatable adjusting member in the ,ber. r c4. Ina tool holder of the character dehole provided with lateral holes, ablock 'slidably mounted in the adjusting member, provided with a transverse hole, a tool support in the transverse hole and in the lateral holes, and means on the block engaging the holding member for clamping the support againstthe adjusting member and securing the adjusting member to the holding memscribed, a holding member having a tapered hole provided with corrugations, a rotatable tapered extension provided with corrugaadjusting membercomprising a body and a tions enga eable with the first corrugations, a block slidably mounted in the body and extension and projecting through the hole,

actool support in the block, and a nut engaging the extended portion of the block.

5, In'a tool holder of the character described, a holding member provided with a tapering hole, a rotatable adjusting member comprising a body provided with a cen-' tral' recess and with lateral holes, and a tapering extension-seated in the first hole and provided with an axial opening, a block comprising a bodyslidably mounted in the recess, and a stem extending through the axial opening and-thefirst hole and provided with a thread,'a nut engaging the thread, and a'tubular tool holder mounted in the body of the block extending through the lateral holes. i V

6. In a tool holder of the character described,- a holding member provided with a tapering hole, a rotatable adjusting member comprising a body provided with lateral holes, and a conical extension registering in the tapering hole, a block slidably mounted in the body and extensionprovided with a transverse hole, a tubular tool support slidably mounted in the transverse hole projecting through the lateral holes and provided at both ends with internal threads,

and means on the block engaging the, holdthe tapering hole and provided with a transverse hole adapted tov register with the lateral holes, a tubular tool support slidably mounted in the transverse hole and the lateral holes, and provided with internal threads in each end, transverse openingsin the support adjacent the threads near one end adapted toireceivea bit, aset screw in one end of the holder adapted toengage the bit, and a boring tool threaded in the other end of the bit. c i V. r

In testimony whereof I'have' afiixed my signature.v GEORGE DOVER. 

